Colombia NIT Number Guide — Format, Check Digit & Compliance
Complete guide to Colombia's NIT tax identification number — 9+1 digit format, mod-11 check digit calculation, RUT registration for foreigners, factura electrónica penalties, and PES obligations for digital service providers.
Colombia VAT (IVA) guidelines
Learn about IVA (impuesto sobre las ventas) rules in Colombia for businesses — the 19% and 5% rates, exento vs excluido, who must register as responsable de IVA, how foreign sellers handle B2B and B2C sales, DIAN's prior-validation e-invoice and its 18 mandatory fields, filing frequencies and NIT-based due dates, and penalties.